| http://www.w3.org/ns/prov#value | - t dealing with lay people who do not know where to find the computer's on button; crop duster pilots who every day have such hazards as toxic chemicals and power lines; crime scene cleaners who not only have to get rid of decomposing flesh and bodily fluids, but who might also run the risk of exposure to asbestos and lead paint when they have to tear up old houses; people who have to work on oil ri
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